.fade-enter {
  opacity: 0;
}
.fade-enter-to {
  opacity: 1;
}
.fade-enter-active {
  transition: opacity 1s ease-in;
}

.fade-leave {
  opacity: 1;
}

.fade-leave-to {
  opacity: 0;
}

.fade-leave-active {
  transition: opacity 1s ease-in;
}



/* animation */

.bounce-enter-active {
  animation: bounce 3s ease-in
}

.bounce-leave-active {
  animation: bounce 3s ease-in reverse
}

@keyframes bounce {
  0% {
    transform: scale(0);
  }
  50% {
    transform: scale(1.5);
  }
  100% {
    transform: scale(1);
  }
}